The Berkshire VCLP.0909.20 ValuClean Plus Series Dry Polyester/Rayon Blend Wipes are hydro-entangled rayon/polyester non-woven wipes that are recommended for ISO Class 5 and above environments. Due to the 50% make up of rayon content these cleanroom wipes have the best-in-class absorbency, reducing wipes usage in spill removal applications.